/* -*- linux-c -*- ------------------------------------------------------- *
 *
 *   Copyright 2002-2007 H. Peter Anvin - All Rights Reserved
 *
 *   This file is part of the Linux kernel, and is made available under
 *   the terms of the GNU General Public License version 2 or (at your
 *   option) any later version; incorporated herein by reference.
 *
 * ----------------------------------------------------------------------- */

/*
 * mktables.c
 *
 * Make RAID-6 tables.  This is a host user space program to be run at
 * compile time.
 */

#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include <stdlib.h>
#include <time.h>

static uint8_t gfmul(uint8_t a, uint8_t b)
{
	uint8_t v = 0;

	while (b) {
		if (b & 1)
			v ^= a;
		a = (a << 1) ^ (a & 0x80 ? 0x1d : 0);
		b >>= 1;
	}

	return v;
}

static uint8_t gfpow(uint8_t a, int b)
{
	uint8_t v = 1;

	b %= 255;
	if (b < 0)
		b += 255;

	while (b) {
		if (b & 1)
			v = gfmul(v, a);
		a = gfmul(a, a);
		b >>= 1;
	}

	return v;
}

int main(int argc, char *argv[])
{
	int i, j, k;
	uint8_t v;
	uint8_t exptbl[256], invtbl[256];

	printf("#include <linux/raid/pq.h>\n");
	printf("#include <linux/export.h>\n");

	/* Compute multiplication table */
	printf("\nconst u8  __attribute__((aligned(256)))\n"
		"raid6_gfmul[256][256] =\n"
		"{\n");
	for (i = 0; i < 256; i++) {
		printf("\t{\n");
		for (j = 0; j < 256; j += 8) {
			printf("\t\t");
			for (k = 0; k < 8; k++)
				printf("0x%02x,%c", gfmul(i, j + k),
				       (k == 7) ? '\n' : ' ');
		}
		printf("\t},\n");
	}
	printf("};\n");
	printf("#ifdef __KERNEL__\n");
	printf("EXPORT_SYMBOL(raid6_gfmul);\n");
	printf("#endif\n");

	/* Compute vector multiplication table */
	printf("\nconst u8  __attribute__((aligned(256)))\n"
		"raid6_vgfmul[256][32] =\n"
		"{\n");
	for (i = 0; i < 256; i++) {
		printf("\t{\n");
		for (j = 0; j < 16; j += 8) {
			printf("\t\t");
			for (k = 0; k < 8; k++)
				printf("0x%02x,%c", gfmul(i, j + k),
				       (k == 7) ? '\n' : ' ');
		}
		for (j = 0; j < 16; j += 8) {
			printf("\t\t");
			for (k = 0; k < 8; k++)
				printf("0x%02x,%c", gfmul(i, (j + k) << 4),
				       (k == 7) ? '\n' : ' ');
		}
		printf("\t},\n");
	}
	printf("};\n");
	printf("#ifdef __KERNEL__\n");
	printf("EXPORT_SYMBOL(raid6_vgfmul);\n");
	printf("#endif\n");

	/* Compute power-of-2 table (exponent) */
	v = 1;
	printf("\nconst u8 __attribute__((aligned(256)))\n"
	       "raid6_gfexp[256] =\n" "{\n");
	for (i = 0; i < 256; i += 8) {
		printf("\t");
		for (j = 0; j < 8; j++) {
			exptbl[i + j] = v;
			printf("0x%02x,%c", v, (j == 7) ? '\n' : ' ');
			v = gfmul(v, 2);
			if (v == 1)
				v = 0;	/* For entry 255, not a real entry */
		}
	}
	printf("};\n");
	printf("#ifdef __KERNEL__\n");
	printf("EXPORT_SYMBOL(raid6_gfexp);\n");
	printf("#endif\n");

	/* Compute inverse table x^-1 == x^254 */
	printf("\nconst u8 __attribute__((aligned(256)))\n"
	       "raid6_gfinv[256] =\n" "{\n");
	for (i = 0; i < 256; i += 8) {
		printf("\t");
		for (j = 0; j < 8; j++) {
			invtbl[i + j] = v = gfpow(i + j, 254);
			printf("0x%02x,%c", v, (j == 7) ? '\n' : ' ');
		}
	}
	printf("};\n");
	printf("#ifdef __KERNEL__\n");
	printf("EXPORT_SYMBOL(raid6_gfinv);\n");
	printf("#endif\n");

	/* Compute inv(2^x + 1) (exponent-xor-inverse) table */
	printf("\nconst u8 __attribute__((aligned(256)))\n"
	       "raid6_gfexi[256] =\n" "{\n");
	for (i = 0; i < 256; i += 8) {
		printf("\t");
		for (j = 0; j < 8; j++)
			printf("0x%02x,%c", invtbl[exptbl[i + j] ^ 1],
			       (j == 7) ? '\n' : ' ');
	}
	printf("};\n");
	printf("#ifdef __KERNEL__\n");
	printf("EXPORT_SYMBOL(raid6_gfexi);\n");
	printf("#endif\n");

	return 0;
}
354153e99d86a16af08'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Ard Biesheuvel &lt;ard.biesheuvel@linaro.org&gt;</td><td class='right'>2017-01-17 13:46:29 +0000</td></tr>
<tr><th>committer</th><td>Herbert Xu &lt;herbert@gondor.apana.org.au&gt;</td><td class='right'>2017-01-23 22:41:33 +0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/drivers/opl4?h=nds-private-remove&amp;id=11e3b725cfc282efe9d4a354153e99d86a16af08'>11e3b725cfc282efe9d4a354153e99d86a16af08</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/drivers/opl4?id=11e3b725cfc282efe9d4a354153e99d86a16af08'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=11e3b725cfc282efe9d4a354153e99d86a16af08'>8b5b9e0e1bcae1ab98ee652ffb7b13b05c209bd6</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/drivers/opl4?h=nds-private-remove&amp;id=11e3b725cfc282efe9d4a354153e99d86a16af08'>sound/drivers/opl4</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/drivers/opl4?h=nds-private-remove&amp;id=d6040764adcb5cb6de1489422411d701c158bb69'>d6040764adcb5cb6de1489422411d701c158bb69</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/drivers/opl4?h=nds-private-remove&amp;id=11e3b725cfc282efe9d4a354153e99d86a16af08&amp;id2=d6040764adcb5cb6de1489422411d701c158bb69'>diff</a>)</td></tr></table>
<div class='commit-subject'>crypto: arm64/aes-blk - honour iv_out requirement in CBC and CTR modes</div><div class='commit-msg'>Update the ARMv8 Crypto Extensions and the plain NEON AES implementations
in CBC and CTR modes to return the next IV back to the skcipher API client.
This is necessary for chaining to work correctly.

Note that for CTR, this is only done if the request is a round multiple of
the block size, since otherwise, chaining is impossible anyway.

Cc: &lt;stable@vger.kernel.org&gt; # v3.16+
Signed-off-by: Ard Biesheuvel &lt;ard.biesheuvel@linaro.org&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=11e3b725cfc282efe9d4a354153e99d86a16af08'>Diffstat</a> (limited to 'sound/drivers/opl4')</div><table summary='diffstat' class='diffstat'>